Results 221 to 230 of about 1,333,915 (292)

Respiratory Motion‐Corrected Model‐Based 3D Water‐Fat MRA of the Thorax at 0.55 T

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose The goal of this study was to develop a 5‐min 3D MRA acquisition at 0.55 T with predictable scan time, 100% data efficiency, and robust water‐fat separation. Methods For full data efficiency, the proposed method combined self‐gating with retrospective motion correction while ensuring a predictable 5‐min scan time.
Robert Stoll, Christoph Kolbitsch, Michaela Schmidt, Marcel Dominik Nickel, Tobias Schaeffter, Daniel Giese   +5 more
wiley   +1 more source

A Lagrangian perspective reveals the carbon and oxygen budget of an oceanic eddy. [PDF]

Commun Earth Environ
Baudena A, Laxenaire R, Catalano C, Ioannou A, Leymarie E, Picheral M, Poteau A, Speich S, Stemmann L, Kiko R.   +9 more
europepmc   +1 more source

Ultrafast Blood T1 Measurement Using Golden Angle Rotated Spiral k‐t Sparse Parallel Imaging (GASSP): Evaluations in Both Pre‐ and Post‐Contrast Conditions

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Blood T1 is a key parameter for hemodynamic quantification in both non‐contrast‐ and contrast‐enhanced imaging. Individual vessel T1 has been measured using a modified Look–Locker scheme with multi‐shot EPI or FLASH in high spatial resolution, requiring ∼1 min.
Zechen Xu, Feng Xu, Qin Qin, Dan Zhu
wiley   +1 more source

Mesoscale eddies shape Prochlorococcus community structure and dynamics in the oligotrophic open ocean. [PDF]

ISME J
Sheyn U, Poff KE, Eppley JM, Leu AO, Bryant JA, Li F, Romano AE, Burger A, Barone B, DeLong EF.   +9 more
europepmc   +1 more source

Spectral Representation of Neurochemicals With Phase, Frequency Offset, and Lineshape Invariance: Application to JPRESS for In Vivo Concentration and T2 Mapping by Deep Learning

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Using artificial intelligence neural networks to generate a representation that maps the input directly to neurochemical concentrations and metabolite‐level average transverse relaxation times (T2). Methods The proposed model used time‐domain JPRESS data as input and was trained to be invariant to phase shifts, frequency offsets, and ...
Yan Zhang, Jun Shen
wiley   +1 more source

Effects of Mesoscale Eddies on Southern Ocean Biogeochemistry. [PDF]

AGU Adv
Keppler L, Eddebbar YA, Gille ST, Guisewhite N, Mazloff MR, Tamsitt V, Verdy A, Talley LD.   +7 more
europepmc   +1 more source

Complementary Sensitivity of Fixed‐Time and Fixed‐Oscillation Regimes to Exchange and Structural Disorder in the Human Brain Revealed Using Oscillating‐Gradient Diffusion MRI With Ultra‐Strong Gradients

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Oscillating‐gradient spin‐echo (OGSE) diffusion MRI probes cell geometry and membrane integrity through the frequency‐dependence of kurtosis, but prior studies have reported inconsistent findings depending on how frequency is varied. We compared frequency‐dependent kurtosis in the human brain under two regimes: varying frequency with ...
Dongsuk Sung, Kwok‐Shing Chan, Julianna Gerold, Wen Zhong, Jialan Zheng, Qiyuan Tian, Hua Guo, Susie Y. Huang, Hong‐Hsi Lee   +8 more
wiley   +1 more source

On Grid-Generated Quantum Turbulence. [PDF]

Entropy (Basel)
Skrbek L.
europepmc   +1 more source

Validating Numerical Simulations to Support Experimental Testing of MRI Gradient‐Induced Heating of Passive Implants

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Numerical simulations can be adopted to aid the evaluation of the interaction between switched gradient fields and metallic implants and estimate the possible temperature increase. Anyway, an analysis of the consistency of their prediction with experiments is lacking, differently from what can be found for exposure to radiofrequency ...
Umberto Zanovello, Alessandro Arduino, Luca Zilberti, Gregor Schaefers, Martin Halaj, Oriano Bottauscio   +5 more
wiley   +1 more source

Shoreward shift of oceanic mesoscale activity over the last three decades. [PDF]

Nat Commun
Zhou S, Zhang Y, Li H, Liu L, Liao E, Xu F.   +5 more
europepmc   +1 more source